E1 connection between Cisco 3845 and Add Drop Multiplexer

Unanswered Question
Sep 28th, 2009

Hi all,

I would like to know how to link the E1 port of a Cisco 3845 router with an ADM, which connects a private network with a public WAN: the 3845 router is used for VoIP communications and IP phones installed in the private network are currently configured with a dial-in number without prefix. What I need to perform is to connect the ADM with a 3845 by a proper cable, so as to configure dial-in numbers with prefix and to have IP phones reachable even from outside network. That said, I need to know the characteristics of the cable and the related connector (RJ-45?), considering that the ADM connector for E1 streams is coaxial (N3 connector).



I have this problem too.
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Paolo Bevilacqua Mon, 09/28/2009 - 07:39

Get CAB-E1-RJ45BNC from cisco and a pair of BNC to N3 adapters from telco.

On the 3845 configure under controller E1 "line termination 75".


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